CN1316299C - Transmissive liquid crystal display device having a cholesteric liquid crystal color filter and method of fabricating the same - Google Patents
Transmissive liquid crystal display device having a cholesteric liquid crystal color filter and method of fabricating the same Download PDFInfo
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- CN1316299C CN1316299C CNB2004100594472A CN200410059447A CN1316299C CN 1316299 C CN1316299 C CN 1316299C CN B2004100594472 A CNB2004100594472 A CN B2004100594472A CN 200410059447 A CN200410059447 A CN 200410059447A CN 1316299 C CN1316299 C CN 1316299C
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
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Abstract
A liquid crystal display device of the present invention includes: first and second substrates including a plurality of pixels, wherein each pixel divided into first to third sub-pixels; a double-layered cholesteric liquid crystal color filter (CCF) layer over the first substrate, the double-layered CCF layer including a first CCF layer including first and second CCF with a ratio of 1:2 in size and a second CCF layer including third and fourth CCF with a ratio of 2:1 in size; a first transparent electrode on the double-layered CCF layer; a second transparent electrode on the second substrate; a liquid crystal layer between the first and second transparent electrodes; and a backlight device adjacent to the first substrate and emitting light toward the first and second substrates.
Description
It is the preference of the korean patent application of No.2003-0045991 at the number of patent application of Korean Patent office application that the application requires on July 8th, 2003, and this korean patent application is incorporated by reference in present patent application.
Technical field
The present invention relates to liquid crystal indicator, particularly use the transmissive liquid crystal display device of cholesteryl liquid crystal color filter layer.
Background technology
Having liquid crystal indicator (LCD) light, thin and the low-power consumption characteristic is used in the equipment such as business automation equipment, video-unit just widely.This LCD uses the liquid crystal material with photoanisotropy (LC) that is arranged between upper substrate and the infrabasal plate usually.Because liquid crystal material (LC) has the liquid crystal molecule of Bao Erchang, apply the aligning direction that electric field can be controlled liquid crystal molecule by giving the liquid crystal molecule.When suitably regulating the aligning direction of liquid crystal molecule, liquid crystal material is aimed at, and light is along the aligning direction refraction of liquid crystal molecule, display image.
Usually, be liquid crystal indicator (LCD) to be divided into transmissive liquid crystal display device and reflection-type liquid-crystal display device according to display with internal light source or with external light source.
Existing liquid crystal indicator comprises matrix base plate, colour filtering chip basic board and be arranged on matrix base plate and colour filtering chip basic board between liquid crystal.Usually voltage is added to respectively on two electrodes that form on matrix base plate and the colour filtering chip basic board, and therefore, the electric field that produces between two electrodes moves and arrange liquid crystal molecule.For display image on liquid crystal indicator, light must pass liquid crystal.Thereby, need produce the light that sees through liquid crystal with back side light.
Existing liquid crystal indicator has LCD panel and back side electro-optical device.Incident light from back side light has decay in transport process, so actual transmissivity has only 7%.Transmissive liquid crystal display device requires the high initial brightness light source, so the power consumption of back side light source increases.Need enough electric power be provided for the back side light of this liquid crystal indicator with heavier battery, and can not use for a long time.
In order to overcome above-mentioned problem, reflection-type liquid-crystal display device has been proposed.Because reflection-type liquid-crystal display device is backlight with the surround lighting replacement by making pixel electrode with the reflection-type opaque material, so reflection-type liquid-crystal display device is in light weight and be easy to carry.Reflection-type liquid-crystal display device in addition, can reduce the power consumption of reflection-type liquid-crystal display device, so can be used as EDiary or PDA (personal digital assistant).
But reflection-type liquid-crystal display device can be subjected to the influence of surrounding environment.For example, indoor environmental light brightness and outdoor environment luminance brightness are different greatly.Therefore, a little less than surround lighting or do not have the place of surround lighting can not use reflection-type liquid-crystal display device.And, because surround lighting sees through colour filtering chip basic board and the reverberator on matrix base plate reflects to colour filtering chip basic board, so reflection-type liquid-crystal display device has the problem of luminance difference.That is to say, because surround lighting sees through colour filtering chip basic board twice, so reflection-type liquid-crystal display device has low transmissivity, therefore, luminance difference.
In order to overcome above-mentioned problem, must improve the transmissivity of color filter.Want to improve transmissivity, just need have the color filter of low excitation.But, owing to, be restricted so reduce excitation with being difficult to form color filter thickness under the critical conditions of colouring resin.Therefore, studied and developed the liquid crystal indicator of rete with the reflection can selected and transmitted light.
Usually, liquid crystal molecule has definite liquid crystal phase according to its structure and component.Liquid crystal phase is subjected to the influence of temperature and concentration, and most of liquid crystal are nematic liquid crystal, and its liquid crystal molecule is arranged in parallel by a direction.Nematic liquid crystal has been subjected to researches and develops widely and is used for various liquid crystal indicators.
In recent years, in order to improve the operating characteristic of transmissive liquid crystal display device, for example brightness, after deliberation and developed selective transmission or catoptrical cholesteryl liquid crystal (CLC) with particular color.CLC has the liquid crystal molecule of a twisting usually or comprises the chiral stationary phase liquid crystal molecule and by the nematic liquid crystal molecules of chiral stationary phase molecule twisting.Usually, nematic liquid crystal has the orderly configuration parallel with another liquid crystal, and cholesteryl liquid crystal has sandwich construction.Configuring in order in present every layer of cholesteryl liquid crystal of nematic liquid crystal.
And CLC has spiral-shaped, and the pitch of CLC is controllable.Therefore, the CLC color filter optionally transmission or/and reflected light.In other words, as everyone knows, all objects all have its intrinsic wavelength, and the color that the observer can discern is from the light wavelength of object reflection or sees through the light wavelength of object.Can be with the light wavelength (λ) of following formulate by CLC reflection, it is the function of the mean refractive index of pitch and CLC.λ=n (on average) pitch, the mean refractive index of n in the formula (on average).For example, when the mean refractive index of CLC is 1.5, when pitch was 430nm, reflection wavelength was 645nm, and reflected light becomes redness.In this way, can obtain green and blueness by the pitch of regulating CLC.
In other words, the wavelength of visible light scope is that 400nm is to 700nm.The visible region roughly is divided into red color area, green district and blue region.The wavelength of red visible region is 660nm, and the wavelength of green visible region is 530nm, and the wavelength in blue visible light district is 470nm.Because the pitch of cholesteryl liquid crystal, CLC color filter optionally transmission or reflection have the light of the natural wavelength of corresponding each pixel color, can show thus have highly purified redness (R), green (G) and blueness (B).Want to provide color accurately, red (R), green (G) and blue (B) look color filter can be set, more panchromatic more clearly to show than existing color filter.Following cholesteryl liquid crystal (CLC) color filter is called CCF.
Fig. 1 demonstrates the basic configuration of existing cholesteryl liquid crystal display device (CCF).When CCF was used for the colour filtering chip basic board of liquid crystal indicator, red (R), green (G) and blue (B) sub-pixels constituted a pixel.And the ratio of red (R), green (G) and blue (B) sub-pixels is 1: 1: 1 in a pixel.That is to say that red (R), green (G) have identical size when being used for existing colour filtering chip basic board with blue (B) look CCF.And two CCF among red (R), green (G) and blue (B) look CCF accumulate and are formed on the CCF of another color among generation red (R) in each word pixel, green (G) and blue (B) look CCF.
Among Fig. 1, (do not having to show) that order forms a CCF layer and the 2nd CCF layer on the position of determining a plurality of red (R), green (G) and blue (B) sub-pixels on the substrate.The one CCF layer 12 has red (R) that forms by alternating sequence, green (G) and blue (B) look CCF, and the second layer also has red (R) that forms by alternating sequence, green (G) and blue (B) look CCF.In producing red redness (R) sub-pixel, be provided with G look and B look CCF.Perhaps, in producing blue blueness (B) sub-pixel, be provided with R look and B look CCF, in producing green green (G) sub-pixel, be provided with R look and B look CCF.
In the R sub-pixel, the green of a CCF layer 12 (G) CCF is reflects green and transmits red and blue light selectively.Afterwards, blueness (B) the CCF reflect blue light of the 2nd CCF layer 14 in the R sub-pixels.As a result, have only red light to see through blueness (B) CCF of the 2nd CCF layer, then, the R sub-pixel produces red.In this way, can in B look and G sub-pixels, produce the blue and green of other respectively.
According to prior art, a pixel has R, G and B sub-pixels, and each sub-pixel has double-deck CCF layer.And R, G have identical size with B look CCF, and its ratio is 1: 1: 1.But there is some shortcoming in this ratio.
The existing ratio form in 1: 1: 1 that demonstrates Fig. 2 disposes the CLC color filter of the transmission-type LCD behind R, G and the B look CCF.As shown, R, G and B sub-pixels are pressed the alternating sequence setting.But, colour mixture can appear in the B border of R, G and B look CCF.Cause the reason of colour mixture to be, because R, G and B look CCF do not have aligning, or owing to light leak in the forming process of CCF.When forming R, G and B look CCF, on cholesteryl liquid crystal (CLC) layer mask is set, then, is preferably on the CLC layer and exposes.At this moment, the exposure scattering also influences other parts of CCF, so, there is improper exposed portions serve in the B border in R, G and B look CCF.
And, when forming R, G and B look CCF, also there is some other problem in 1: 1: 1 ratio.Cholesteryl liquid crystal (CLC) becomes R, G and B look CCF, and much and how long depend on exposure.Form the initial CLC layer of thickness uniformity on substrate, still, have different thickness at R, G with B look CCF because the exposure difference is formed, G look CCF is than the thick 0.25 μ m of B look CCF usually, and R look CCF is than the thick 0.25 μ m of G look CCF.That is to say, comprise in the pixel that the maximum ga(u)ge difference that the CCF layer of R, G and B CCF has is 0.5 μ m.Demonstrate this thickness difference among Fig. 3.When having ladder (that is, thickness difference) in the CCF layer, can cause the different units gap in the pixel between colour filtering chip basic board and the matrix base plate, it is poor to cause postponing.Again referring to Fig. 1, the 2nd CCF time 14 can a smooth CCF layer 12 the surface, still, in R, the G of the 2nd CCF layer made from exposure 14 and B look CCF, thickness difference (ladder) is arranged.
Summary of the invention
The present invention relates to cholesteryl liquid crystal color filter (CCF) type transmissive liquid crystal display apparatus, it has overcome limitation and the caused one or more problems of shortcoming in the prior art basically.
Advantage of the present invention is that a kind of CCF type transmissive liquid crystal display apparatus that does not have colour mixture in the CCF border is provided.
Another advantage of the present invention is, a kind of CCF type transmissive liquid crystal display apparatus that the color improved shows that has is provided.
Other features and advantages of the present invention below are described, can understand a part of feature and advantage of the present invention, perhaps, can understand a part of feature and advantage of the present invention by putting into practice the present invention from instructions.By explanatory note book of the present invention, the concrete structure of pointing out in claims and the accompanying drawing can reach and realize day of the present invention these advantages and other advantages.
For reaching these advantages and other advantages, according to purpose of the present invention, as institute specifically and general description, liquid crystal indicator comprises: first and second substrates of a plurality of pixels are arranged, and wherein, each pixel is divided into first to the 3rd sub-pixel; Double-deck cholesteryl liquid crystal color filter (CCF) on first substrate, double-deck CCF layer comprises: a CCF layer, it has first and second CCF of 1: 2 dimension scale; With the 2nd CCF layer, it has third and fourth CCF of 2: 1 dimension scales; First transparency electrode on the double-deck CCF layer; Second transparency electrode on second substrate; Liquid crystal layer between first and second transparency electrode; And be arranged near first substrate to the luminous back lighting device of first and second substrates.
Should be appreciated that it is that above general remark or following detailed description all is typical and exemplary explanation, be intended to illustrate better claimed the present invention.
Description of drawings
Included herein accompanying drawing is used for connecting better the present invention, and accompanying drawing is a component part of this instructions, demonstrates embodiments of the invention in the accompanying drawing, and accompanying drawing illustrates principle of the present invention with instructions.
In the accompanying drawing:
Fig. 1 demonstrates the main configuration of existing cholesteryl liquid crystal color filter (CCF);
Fig. 2 demonstrates in 1: 1: 1 ratio form configuration R, the G and CLC first color filter of the transmissive liquid crystal display apparatus behind the B look CCF;
Fig. 3 is the curve map that shows the thickness difference of existing cholesteryl liquid crystal color filter;
Fig. 4 A is the planimetric map that has the colour filtering chip basic board of cholesteryl liquid crystal color filter by of the present invention;
Fig. 4 B is the planimetric map by matrix base plate of the present invention;
Fig. 5 is along the cut-open view of the V-V line among Fig. 4 A and Fig. 4 B when being connected to each other by matrix base plate of the present invention and colour filtering chip basic board;
Fig. 6 is the curve map that shows by the thickness difference of cholesteryl liquid crystal color filter of the present invention; With
Fig. 7 demonstrates the main configuration by cholesteryl liquid crystal color filter of the present invention (CCF).
Embodiment
Referring now to the detailed description of embodiments of the invention,, demonstrates the example of embodiment in the accompanying drawing.In whole accompanying drawings system or similarly parts with identical symbology.
Fig. 4 A is the planimetric map that has the colour filtering chip basic board of cholesteryl liquid crystal color filter by of the present invention, and Fig. 4 B is the planimetric map by matrix base plate of the present invention.
Among Fig. 4 A, on first substrate 110, define the pixel P that comprises three sub-pixel SP.Three sub-pixel SP had identical dimension scale 1: 1: 1.Form double-deck cholesteryl liquid crystal color filter (CCF) layer 116 that comprises a CCF layer 12 and the 2nd CCF layer 14 on first substrate 110.Although sub-pixel SP had identical dimension scale 1: 1: 1,, two CCF112b or 114a among the sub-pixel SP with same color, and another sub-pixel SP has the CCF112a or the 114b of different colours.Therefore, compared with the prior art, the ratio of the CCF in the pixel is 2: 1.Below will describe this CCF structure in detail referring to Fig. 5.Yet, on double-deck CCF layer 116, form common electrode 118.
Fig. 4 B demonstrates the matrix base plate that is oppositely arranged with colour filtering chip basic board.As scheme to show, on second substrate 130, grid line 132 is set by first direction.By second direction data line 138 is set on second substrate 130, grid line 132 intersects with data line 138 perpendicular.A pair of grid line 132 and data line 138 are determined the zone of a sub-pixel SP.Form thin film transistor (TFT) T near the point of crossing of grid line 132 and data line 138, thin film transistor (TFT) T comprises: grid 134, semiconductor layer 136, source electrode 140 and drain 142.Grid 134 stretches out from grid line 132, and source electrode 140 stretches out from data line 138.Drain electrode 142 separates with grid 134 with source electrode 140 and intersects.Semiconductor layer 136 be arranged on source electrode 140 and the part between 142 of draining in.Pixel electrode 144 is provided with in the sub-pixel area and with the drain electrode 142 of thin film transistor (TFT) T and links to each other.
Fig. 5 is along the cut-open view of the V-V line among Fig. 4 A and Fig. 4 B when being connected to each other by matrix base plate of the present invention and colour filtering chip basic board.As scheme to show that first substrate 110 and second substrate 130 are spaced from each other and face mutually.First substrate 110 and second substrate 130 comprise the pixel P that is divided into three sub-pixel SP.Double-deck CCF layer 116 is arranged on first substrate 110.As described above, a CCF layer 112 and the 2nd CCF layer 114. CCF layer 112 on a CCF layer 112 that double-deck CCF layer 116 is included on first substrate 110 comprise a CCF112a who occupies a sub-pixel SP and the 2nd CCF112b that occupies other two sub-pixel SP, and the 2nd CCF layer 114 comprises the 3rd CCF114a that occupies two sub-pixel SP and only occupy the 4th CCF114b of another sub-pixel SP.The one CCF112a and the 4th CCF114b only are arranged in a sub-pixel SP, and identical color can be arranged, and the 2nd CCF112b can have different color mutually with the 3rd CCF114a, and with a CCF112a and the 4th CCF114b different colors is arranged.Among the sub-pixel SP, particularly in a sub-pixel of the centre of Fig. 5, it is overlapping with the 2nd CCF112b that also occupies two sub-pixels to occupy the 3rd CCF114a of two sub-pixels.
And a CCF112a of the CCF layer 112 in pixel P and the 2nd CCF112b were in 1: 2 ratio.In addition, the 3rd CCF114a of the 2nd CCF layer 114 in pixel P and the 4th CCF114b were in 2: 1 ratio.If a CCF112a of a CCF layer 112 represents blueness (B) and the 2nd CCF112b of a CCF layer 112 represent redness (R), so, blue (B) is 1: 2 with the ratio of red (R).If the 3rd CCF114a of the 2nd CCF layer 114 represents green (G) look, the 4th CCF114b of the 2nd CCF layer 114 represents blueness (B), and so green (G) look is 2: 1 with the ratio of blue (B).Unlike the prior art, among the present invention, each layer in a CCF layer 112 and the 2nd CCF layer 114 all includes only two CCF:B looks and R look, R look and G look, or G look and B look.B look and R look, R look and G look, or G look and B colour cell are closed generation R, G and B look.And, by the present invention, because two sub-pixel SP of pixel P have the same color of representing CCF, so, compared with prior art, between two sub-pixels, do not demonstrate the thickness difference (ladder) of CCF.
Referring to Fig. 5, form first insulation course 131 on the back side of second substrate 130 again, data line 138 is arranged on the bottom of first insulation course 131.The border of every data lines 138 corresponding sub-pixel SP.The bottom of data line 138 deposits second insulation course 139.Pixel electrode 144 is deposited on the rear surface of second insulation course 139.The position of corresponding each the sub-pixel SP in the position of each pixel electrode 144.Liquid crystal layer 150 is between common electrode 118 and pixel electrode 144.Produce and near the back side electro-optical device 160 that simulated light take place for first substrate 110 and second substrate 130 is arranged on the back side of first substrate 110.
Fig. 6 is the curve map that shows by the thickness difference of cholesteryl liquid crystal color filter of the present invention.As above-mentioned, thickness difference between green (G) CCF and blueness (B) CCF is 0.25 μ m, thickness difference between red (R) CCF and green (G) CCF is 0.25 μ m, red (R) CCF and (B) thickness difference between the CCF be 0.5 μ m. therefore, because every layer of CCF layer comprises all R, G and B look CCF are so the maximum ga(u)ge that every layer of CCF layer has 0.5 μ m is poor.But, by the present invention since in every layer of CCF layer 112 or 114 only with two CCF, so thickness difference can be reduced to 0.25 μ m.And double-deck liquid crystal cholesterol color filter (CCF) layer can improve character of surface, as shown in Figure 6.
Fig. 7 demonstrates the main configuration by cholesteryl liquid crystal color filter of the present invention.As scheme to show that double-deck CCF layer 216 comprises a CCF layer 212 and the 2nd CCF layer 214.The one CCF layer 212 comprises that dimension scale is 1: 2 blueness (B) CCF212a and redness (R) CCF212b.Blue (B) CCF212a and redness (R) CCF 212b are arranged alternately by the figure that repeats.The 2nd CCF layer 214 comprises that dimension scale is 2: 1 green (G) CCF214a and blueness (B) CCF 214b.By the mode identical with a CCF layer 212, the green of the 2nd CCF layer 214 (G) CCF214a and blueness (B) CCF 214b are arranged alternately by the figure of repetition.By the present invention, green (G) CCF214a covers the whole of blue (B) CCF 212a, covers half of red (R) CCF 212b, and the blueness of the 2nd CCF layer 214 (B) CCF 214b covers second half of red (R) CCF 212b.
When back side electro-optical device (indicating with 160 among Fig. 5) is supplied with light to the front from behind, because blueness (B) the CCF 212a of a CCF layer 212 only sees through the redness and the green portion of light, the green of the 2nd CCF layer 214 (G) CCF214a only sees through the redness of light, so the sub-pixel that has B and G colour cell to close produces red light.In this way, the sub-pixel that has R and G colour cell to close produces blue light, and the sub-pixel that has R and B colour cell to close produces green light, therefore, has the pixel energy of three sub-pixels to produce FR multiple color of image.
According to the present invention, because each layer in a CCF layer 212 and the 2nd CCF layer 214 all has only two among R, G and the B look CCF, so, can reduce the colour mixture in the border in the sub-pixel.And, be used for the 2nd CCF layer 214 owing to have the G and the B CCF of 0.25 μ m thickness ladder, so, reducing thickness difference and become possibility, double-deck CCF layer 216 can have smooth surface.As a result, in pixel, do not have different cell gaps, thereby it is poor to prevent delay, produces the panchromatic of excellence by liquid crystal indicator of the present invention.
The technician of the industry should be appreciated that; under the premise without departing from the spirit and scope of the present invention; the present invention also has various improvement and variation; therefore; the present invention covers these improvement and variation, and these improvement and variation fall in the claimed scope of the invention that appended claims and equivalent thereof define.
Claims (18)
1, a kind of liquid crystal indicator comprises:
First and second substrates that comprise a plurality of pixels, each pixel are divided into first to the 3rd sub-pixel;
Double-deck cholesteryl liquid crystal color filter layer on first substrate, double-deck cholesteryl liquid crystal color filter layer comprises:
The first cholesteryl liquid crystal color filter layer comprises dimension scale and is 1: 2 the first cholesteryl liquid crystal color filter and the second cholesteryl liquid crystal color filter;
The second cholesteryl liquid crystal color filter layer comprises dimension scale and is 2: 1 the 3rd cholesteryl liquid crystal color filter and the 4th cholesteryl liquid crystal color filter;
First transparency electrode on the double-deck cholesteryl liquid crystal color filter layer;
Second transparency electrode on second substrate;
Liquid crystal layer between first transparency electrode and second transparency electrode; With
Back lighting device is arranged near first substrate, and is luminous to first and second substrates.
According to the liquid crystal indicator of claim 1, it is characterized in that 2, the first cholesteryl liquid crystal color filter layer is on first substrate, the second cholesteryl liquid crystal color filter layer is deposited on the first cholesteryl liquid crystal color filter layer.
According to the liquid crystal indicator of claim 1, it is characterized in that 3, the first cholesteryl liquid crystal color filter layer occupies first sub-pixel, the second cholesteryl liquid crystal color filter layer occupies the second and the 3rd sub-pixel.
According to the liquid crystal indicator of claim 1, it is characterized in that 4, the 3rd cholesteryl liquid crystal color filter layer occupies first and second sub-pixel, the 4th cholesteryl liquid crystal color filter layer occupies the 3rd sub-pixel.
5, according to the liquid crystal indicator of claim 1, it is characterized in that, the 3rd cholesteryl liquid crystal color filter layer covers half of whole first sub-pixels and the second cholesteryl liquid crystal color filter, and the 4th cholesteryl liquid crystal color filter layer covers second half of the second cholesteryl liquid crystal color filter.
According to the liquid crystal indicator of claim 1, it is characterized in that 6, the first and second cholesteryl liquid crystal color filters alternately are configured in the first cholesteryl liquid crystal color filter layer by repetitive pattern.
According to the liquid crystal indicator of claim 1, it is characterized in that 7, the third and fourth cholesteryl liquid crystal color filter alternately is configured in the second cholesteryl liquid crystal color filter layer by repetitive pattern.
8, according to the liquid crystal indicator of claim 1, it is characterized in that the first cholesteryl liquid crystal color filter catoptrical blue portion, the green of transmitted light and red part.
9, according to the liquid crystal indicator of claim 8, it is characterized in that the catoptrical green portion of the 3rd cholesteryl liquid crystal color filter, the red part of transmitted light.
10, according to the liquid crystal indicator of claim 1, it is characterized in that the catoptrical red part of the second cholesteryl liquid crystal color filter, the blueness of transmitted light and green portion.
11, according to the liquid crystal indicator of claim 10, it is characterized in that the catoptrical green portion of the 3rd cholesteryl liquid crystal color filter, the blue portion of transmitted light.
12, according to the liquid crystal indicator of claim 10, it is characterized in that the catoptrical blue portion of the 4th cholesteryl liquid crystal color filter, the green portion of transmitted light.
According to the liquid crystal indicator of claim 1, it is characterized in that 13, first sub-pixel has blue and green cholesteryl liquid crystal color filter combination, the red part of combination transmission simulated light.
According to the liquid crystal indicator of claim 1, it is characterized in that 14, second sub-pixel has red and green cholesteryl liquid crystal color filter combination, the blue portion of combination transmission simulated light.
According to the liquid crystal indicator of claim 1, it is characterized in that 15, the 3rd sub-pixel has red and blue cholesteryl liquid crystal color filter combination, the green portion of combination transmission simulated light.
16, according to the liquid crystal indicator of claim 1, it is characterized in that, also comprise:
First insulation course on second substrate;
Gate line on second substrate and data line, wherein, data line bit is in the bottom of first insulation course, and gate line and data line are determined sub-pixel; With
Second insulation course between the data line and second transparency electrode.
17, according to the liquid crystal indicator of claim 16, it is characterized in that, also comprise: near the thin film transistor (TFT) in each point of crossing that is positioned at gate line and data line.
According to the liquid crystal indicator of claim 17, it is characterized in that 18, thin film transistor (TFT) comprises: grid, active layer, source electrode and drain electrode.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020030045991 | 2003-07-08 | ||
| KR1020030045991A KR100986163B1 (en) | 2003-07-08 | 2003-07-08 | Transmissive Liquid Crystal Display Device having a Cholesteric Liquid Crystal Color-filter and Method for Fabricating the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1576993A CN1576993A (en) | 2005-02-09 |
| CN1316299C true CN1316299C (en) | 2007-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100594472A Expired - Fee Related CN1316299C (en) | 2003-07-08 | 2004-06-28 | Transmissive liquid crystal display device having a cholesteric liquid crystal color filter and method of fabricating the same |
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| Country | Link |
|---|---|
| US (1) | US7027119B2 (en) |
| KR (1) | KR100986163B1 (en) |
| CN (1) | CN1316299C (en) |
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| KR101714057B1 (en) * | 2010-12-28 | 2017-03-09 | 엘지디스플레이 주식회사 | Liquid crystal display device |
| CN109147699B (en) * | 2018-09-19 | 2021-01-22 | 京东方科技集团股份有限公司 | Double-layer display device and driving method thereof |
| CN111367106B (en) * | 2020-03-04 | 2021-01-29 | 广东多特光电科技有限公司 | Handwriting film with color freely changing along with position and electronic writing equipment |
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| WO2002007537A2 (en) * | 2000-07-24 | 2002-01-31 | The Procter & Gamble Company | Dehydrated potato products |
| CN1414417A (en) * | 2001-10-24 | 2003-04-30 | 精工爱普生株式会社 | Liquid crystal display device and electronic equipment |
| CN1424617A (en) * | 2001-12-07 | 2003-06-18 | 精工爱普生株式会社 | Reflective boards, liquid crystal display devices and electronic devices |
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| GB2296807A (en) * | 1994-12-29 | 1996-07-10 | Sharp Kk | Illumination system |
| JP3549176B2 (en) * | 1997-07-28 | 2004-08-04 | 株式会社東芝 | Liquid crystal display device and method for manufacturing color filter substrate |
| KR100682356B1 (en) * | 2000-06-14 | 2007-02-15 | 엘지.필립스 엘시디 주식회사 | Transparent and Reflective Type Liquid Crystal Display Apparatus |
| KR100404988B1 (en) * | 2001-05-23 | 2003-11-07 | 엘지.필립스 엘시디 주식회사 | cholesteric liquid crystal color filter and manufacturing method thereof |
| JP3700611B2 (en) * | 2001-06-07 | 2005-09-28 | セイコーエプソン株式会社 | Transflective electro-optical device and electronic apparatus |
| JP2003149426A (en) * | 2001-11-09 | 2003-05-21 | Dainippon Printing Co Ltd | Color filter, method for manufacturing the same and display device |
| KR100439650B1 (en) * | 2002-08-14 | 2004-07-12 | 엘지.필립스 엘시디 주식회사 | Reflective Liquid Crystal Display Device using a Cholesteric Liquid Crystal Color Filter and method of manufacturing the same |
-
2003
- 2003-07-08 KR KR1020030045991A patent/KR100986163B1/en active IP Right Grant
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2004
- 2004-06-28 CN CNB2004100594472A patent/CN1316299C/en not_active Expired - Fee Related
- 2004-06-29 US US10/878,400 patent/US7027119B2/en active Active
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| WO2002007537A2 (en) * | 2000-07-24 | 2002-01-31 | The Procter & Gamble Company | Dehydrated potato products |
| CN1414417A (en) * | 2001-10-24 | 2003-04-30 | 精工爱普生株式会社 | Liquid crystal display device and electronic equipment |
| CN1424617A (en) * | 2001-12-07 | 2003-06-18 | 精工爱普生株式会社 | Reflective boards, liquid crystal display devices and electronic devices |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100986163B1 (en) | 2010-10-07 |
| US20050007523A1 (en) | 2005-01-13 |
| KR20050006306A (en) | 2005-01-17 |
| CN1576993A (en) | 2005-02-09 |
| US7027119B2 (en) | 2006-04-11 |
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